Accountant in Chihuahua 2026: 2% payroll tax SHECH, CACH aerospace cluster, electronics maquiladoras in Juárez and nearshoring
05 Nov 2026|20 min read
Ryan Matthews arrived in Chihuahua in September 2022 to lead a precision CNC machining operation supplying structural components to Honeywell Aerospace Mexico. Sixteen months later, a SAT review found four problems his Denver, Colorado firm had never anticipated: the 2% Chihuahua payroll tax with SHECH (hacienda.chihuahua.gob.mx) had been filed with the federal SAT as if it were a federal tax — the most common state tax error by US companies that confuse Mexico's tax structure —; two subcontracted CNC operators working inside the Honeywell plant without valid REPSE generated $920,000 pesos in joint IMSS liability; prototype production services invoiced at 0% VAT under Art. 29 LIVA turned out to be services rendered to the Mexican Honeywell entity, not to its Phoenix corporate — a domestic transaction requiring 16% VAT, generating a $1.4 million peso adjustment; and the company operated under Honeywell's IMMEX assuming that certification covered service providers, which it does not. Total adjustments, fines and surcharges reached $3.1 million pesos — more than double what a local accountant from day one would have cost.
Chihuahua has two industrial poles with distinct fiscal profiles but the same 2% payroll tax. Chihuahua city hosts CACH (Clúster Aeroespacial de Chihuahua), with over 70 companies and $1.5 billion in annual exports: Honeywell Aerospace, Collins Aerospace (Pratt & Whitney), Safran, GKN Aerospace, Textron Aviation and Leap Systems. Ciudad Juárez is the electronics-maquiladora pole: Foxconn, Jabil, Flex Ltd, Delphi/Aptiv, Thomson/TCL and Lexmark. For both poles, a Chihuahua-specialized accountant must understand the state payroll tax with SHECH, REPSE in aerospace and electronics contexts, 0% VAT under Art. 29 LIVA for service exports, and the four nearshoring traps behind 80% of fiscal penalties.
2% payroll tax with SHECH: applies equally in Chihuahua city and Ciudad Juárez
The Chihuahua payroll tax is 2% monthly, administered by SHECH at hacienda.chihuahua.gob.mx. The rate is uniform across the state — the same at a Chihuahua city aerospace plant and a Juárez electronics maquiladora. Filing deadline is the 20th of the following month. Companies with operations in both Juárez and Chihuahua city file one consolidated state declaration through SHECH — not by city.
State
Payroll tax
Administrator
Annual saving vs CDMX*
Mexico City
3.0%
CDMX Treasury
—
Querétaro
3.0%
SHQ
$0
Coahuila
2.5%
SF-COA
$300,000 MXN
Nuevo León
2.0%
SFNL
$600,000 MXN
Sonora
2.0%
SF-SON
$600,000 MXN
Chihuahua (city + Juárez)
2.0%
SHECH
$600,000 MXN
*Annual saving based on $5 million MXN monthly payroll.
CACH groups over 70 companies, ~15,000 direct jobs, and ~$1.5B USD annual exports. Anchor companies: Honeywell Aerospace, Collins Aerospace/Pratt & Whitney, Safran, GKN Aerospace, Textron Aviation and Leap Systems. REPSE in Chihuahua's aerospace sector: an MRO company working inside Honeywell or Safran facilities — REPSE required. A machined parts supplier delivering at the dock — no REPSE. NDT testing technicians permanently stationed on the production line — REPSE. A coatings shop that takes parts to its own facility — no REPSE, since the service is rendered at the provider's premises.
Juárez electronics maquiladoras: Foxconn, Jabil, Flex and ISN + REPSE
Ciudad Juárez has over 350 active maquiladoras and 300,000+ manufacturing jobs producing consumer electronics, automotive electronic components and industrial equipment. Specialized service providers in this ecosystem — SMT soldering teams working inside Foxconn production lines, in-plant logistics handlers, test line calibration technicians — require REPSE. Equipment suppliers who maintain units from their own workshop do not. The same principle applies: where is the service rendered, and whose facilities does the beneficiary control.
Nexoconsult services for companies in Chihuahua:
Monthly payroll tax registration and filing with SHECH
REPSE for CACH aerospace companies: service-type differentiation
REPSE for Juárez electronics maquiladoras: SMT, in-plant logistics, NDT
Art. 29 LIVA VAT 0% analysis: domestic vs genuine export service diagnosis
IMMEX certification for aerospace and electronics nearshoring
0% VAT Art. 29 LIVA for service exports: what applies and the 3 most common errors
For service companies in CACH or Juárez industrial parks with US corporate clients, Art. 29 LIVA can apply 0% VAT to exported services — but conditions are strict and SAT scrutiny has intensified in 2026. The service must be rendered in Mexico, the direct beneficiary must be a foreign resident (not the Mexican subsidiary), and the economic benefit must be used outside Mexico. The 0% rate does not apply when "Honeywell Mexico S.A. de C.V." receives the invoice even if the Phoenix headquarters approves the project. Prototypes manufactured in Chihuahua that remain at Honeywell Chihuahua for inline testing carry 16% VAT regardless of contract signatory.
Nearshoring in Chihuahua: own entity vs Shelter IMMEX — and the 4 most costly mistakes
Own entity with IMMEX takes 3-6 months but provides full operational flexibility and direct fiscal responsibility — best for long-term operations (2+ years). Shelter IMMEX starts in 4-6 weeks with shared liability — best for market validation, pilot projects, or first year operations. The four most costly nearshoring mistakes: payroll tax filed with federal SAT instead of SHECH; REPSE absent for technicians at client facilities; 0% VAT applied to domestic operations because the contract is with a US corporate even though the service benefits the Mexican entity; and operating under the client's IMMEX without own certification, triggering retroactive VAT and tariff collection from the first import.
Frequently Asked Questions
The Chihuahua payroll tax is 2% monthly on total compensation paid to workers providing services in the state, uniform for both Chihuahua city and Ciudad Juárez. It is administered by the State Treasury of Chihuahua (SHECH), with portal at hacienda.chihuahua.gob.mx. The monthly filing deadline is the 20th of the following month — 3 days later than most northern states. The most common mistake by US companies: confusing the state payroll tax with a federal SAT withholding, filing the 2% in the federal SAT payment system rather than the SHECH portal. The federal SAT has no jurisdiction over the state payroll tax — that payment does not discharge the SHECH obligation.
A company in CACH or the Juárez industrial parks needs REPSE when it sends specialized personnel to work inside the final client's facilities. In aerospace: calibration technicians permanently stationed on Honeywell's engine component assembly line — REPSE required. Machined parts suppliers making delivery at the Collins Aerospace receiving dock — no REPSE needed. In Juárez electronics: specialized SMT soldering service providers working inside Foxconn's production line — REPSE required. The highest-risk area: MRO (Maintenance, Repair and Overhaul) companies in aerospace performing work inside Honeywell, Safran or GKN Aerospace facilities. Virtually all in-plant MRO activity is a specialized service requiring REPSE, with IMSS joint liability up to 3 years if unregistered — for operations of 10-30 people in aerospace, that can easily reach $500,000-$1,500,000 MXN.
Art. 29 of Mexico's VAT Law establishes that services rendered on Mexican territory by Mexican companies to foreign residents for use abroad are subject to 0% VAT. The strict requirements: the service must be performed in Mexico; the direct beneficiary must be a foreign resident (not a Mexican subsidiary of the foreign parent); and the economic benefit must be used outside Mexico. The most common mistake in Chihuahua is applying 0% VAT to services rendered to the Mexican entity of a client, even when the contract is signed with the US headquarters. If the company that receives and benefits from the service is in Mexico, 16% VAT applies. The SAT 2026 test: who economically benefits from the service — the entity in Mexico or the foreign corporate? A contract saying "for the Phoenix corporate" is not sufficient if the resulting prototypes or components remain in the Chihuahua plant for local assembly.
The four most costly mistakes for nearshoring companies setting up in Chihuahua without local tax advice: First, payroll tax filed with the federal SAT instead of SHECH: penalties for filing with the wrong entity plus accumulated surcharges over 2-3 years can exceed the original tax. Second, missing REPSE for technicians or specialists working inside client facilities: IMSS joint liability up to 3 years of unretained contributions — in aerospace operations of 10-30 people, easily $500,000-$1,500,000 MXN. Third, 0% VAT applied to domestic operations disguised as exports: the resulting VAT adjustment plus surcharges and formal penalties can exceed three times the VAT not charged. Fourth, operating under the client's IMMEX without own certification: many new maquiladoras assume Honeywell's, Foxconn's or Flex's IMMEX covers their own tool, test equipment and auxiliary material imports — incorrect. When SAT detects temporary import without own IMMEX, it charges retroactive VAT and tariffs with surcharges from the first import.
Fees for companies in CACH or Juárez industrial parks vary by profile. For a specialized services company in aerospace with 10-50 employees, primarily local operations, active REPSE and 0% VAT billing under Art. 29 LIVA: $12,000-$22,000 MXN monthly for full accounting, payroll, federal filings, payroll tax with SHECH, IMSS/INFONAVIT and REPSE compliance. For a Juárez electronics maquiladora with active IMMEX certification, 50-200 employees, US related parties and complex export operations: $22,000-$45,000 MXN monthly. A key indicator of real Chihuahua experience: the accountant files payroll tax with SHECH (not the federal SAT), understands the 16% vs 0% VAT distinction in the Art. 29 LIVA context for Juárez and Chihuahua city operations, and knows the IMMEX model for aerospace and electronics export maquiladoras.
